Leak detector



FIG. 1 is a top plan view of a leak detector embodying my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is the other side elevational view thereof;

FIG. 5 is an end elevational view thereof; and,

FIG. 6 is an elevational view of the opposite end thereof. 

The ornamental design for a leak detector, as shown. 